/Engine/Source/Editor/SubobjectEditor/Public/SSubobjectEditor.h
Populate the context menu with implementation specific details
void PopulateContextMenuImpl ( [UToolMenu](API\Developer\ToolMenus\UToolMenu) * InMenu, [TArray](API\Runtime\Core\Containers\TArray)< FSubobjectEditorTreeNodePtrType > & InSelectedItems, bool bIsChildActorSubtreeNodeSelected )